ADU Cities designs and builds custom accessory dwelling units throughout Sonoma County, California. Our in-house design-build team handles every step: feasibility and zoning review, architectural and structural plans, Title 24 energy documentation, permit submittal and plan-check corrections, construction, inspections, and final sign-off.
County ADU portal: Permit Sonoma ADU page — Permitting steps, checklists, and ordinance links for accessory and junior ADUs.
Cities We Serve in Sonoma County
- Cloverdale
- Cotati
- Healdsburg
- Petaluma
- Rohnert Park
- Santa Rosa
- Sebastopol
- Sonoma
- Windsor
Don’t see your city listed? We serve all of Sonoma County, including unincorporated communities. Call 562.810.1965 for a free consultation.
